Web-Face-to-Face Mixed-Mode Design in a Longitudinal Survey: Effects on Participation Rates, Sample Composition, and Costs

Bianchi, Annamaria ^[1] ; Biffignandi, Silvia ^[1] ; Lynn, Peter ^[2]
1. [1] University of Bergamo
  
  University of Bergamo
  
  Bérgamo, Italia
2. [2] University of Essex
  
  University of Essex
  
  Colchester District, Reino Unido
Localización: Journal of official statistics, ISSN 0282-423X, Vol. 33, Nº. 2, 2017 (Ejemplar dedicado a: Total Survey Error (TSE)), págs. 385-408
Idioma: inglés
DOI: 10.1515/jos-2017-0019
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Resumen
- Sequential mixed-mode designs are increasingly considered as an alternative to interviewer-administered data collection, allowing researchers to take advantage of the benefits of each mode. We assess the effects of the introduction of a sequential web-face-to-face mixed-mode design over three waves of a longitudinal survey in which members were previously interviewed face-to-face. Findings are reported from a large-scale randomised experiment carried out on the UK Household Longitudinal Study. No differences are found between the mixed-mode design and face-to-face design in terms of cumulative response rates and only minimal differences in terms of sample composition. On the other hand, potential cost savings are evident.